Northeast India refers to the easternmost region of India consisting of the contiguous Seven Sister States, Sikkim, and parts of North Bengal (districts of Darjeeling, Jalpaiguri, and Koch Bihar). In the far northeast, the Chin Hills and Kachin Hills, deeply forested mountainous regions, separate India from Myanmar. The Bangladesh-India border is defined by the Khasi Hills and Mizo Hills, and the watershed region of the Indo-Gangetic Plain. The Patkai, or Purvanchal, are situated near India's eastern border with Myanmar, made up of the Patkai–Bum, the Garo–Khasi–Jaintia and the Lushai hills.
The Garo–Khasi range lies in Meghalaya. Mawsynram, a village near Cherrapunji , located on the windward side of these hills, has the distinction of being the wettest place in the world.